CVE-2020-37220
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
May 13, 2026
Vendor
unknown
Description
Huawei HG630 V2 router contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain administrative access by retrieving the device serial number. Attackers can query the /api/system/deviceinfo endpoint without authentication to extract the SerialNumber field, then use the last 8 characters as the default password to login to the router.